Sleeping Pill Ingredients Found in Bodies of Family Found Dead in Wando
It definitely appears the family from Gwangju killed themselves after their car was found submerged in the waters of Wando island:
Police investigating the mysterious deaths of a 10-year-old girl and her parents found last month in a car sunk in waters off the southwestern coast said Wednesday that sleeping pill ingredients have been found in their bodies.
Korea Times
The Gwangju Nambu Police Station said it was recently informed by the National Forensic Service of the detection of sleeping pill ingredients in the remains of Cho Yu-na, a Gwangju elementary school student, and her parents in their 30s.
Cho and her parents, who resided in the southwestern metropolitan city of Gwangju, were found dead on June 29 inside their family car pulled out of waters off Wando, a quiet island about 120 kilometers south of their home. The family went missing about a month earlier after last being seen alive on closed-circuit TV at a Wando guesthouse on May 30.
You can read more at the link, but it seems very selfish to commit suicide with the 10-year old girl that had no say in this.
All suicides are selfish. They just leave dead bodies and unanswered questions.
Maybe they just wanted to sleep with the fishes?